horsehood

English

From horse +‎ -hood.

horsehood (uncountable)

the state or quality of being a horse
- 1916, G.K. Chesterton, The Crimes of England‎^[1]:
  Why should that singing horse commonly called the nightingale, or that climbing horse hitherto known as the cat, fall down and worship you because of your horsehood?
- 1889, Grant Allen, Falling in Love‎^[2]:
  He was still in the intermediate stage between horse and donkey, a natural mule still struggling up aspiringly toward perfect horsehood.
A piece of horsewear that covers the head of the horse, often also its neck and shoulders.

state or quality

piece of horsewear